Valve Tappet Clearance Adjustment M38 L head

horse · Post by **horse** » Sun Apr 12, 2020 1:04 am

Hi, I would like to carry out the above check which I should have done when I had the manifold off to fix the Heat Riser.

I see from some postings some people take the wing off for better access. Would I be better off taking the manifold off again or can you get to all the Tappets through the compartment cover without removing parts?

Looks a bit tight for room, exhaust etc in the way.

Thanks in advance Horse.

4x4M38 · Post by **4x4M38** » Sun Apr 12, 2020 8:18 am

Pull off the fender you’ll have all kinds of room!

horse · Post by **horse** » Sun Apr 12, 2020 9:38 am

Thank you

Post by **wesk** » Sun Apr 12, 2020 1:26 pm

Depending on which if any manual you are using they call for .014 lash or .016 lash. The .014 lash was the original setting and the factory posted a bulletin change to .016 to allow higher cruise speeds and better off road performance.

horse · Post by **horse** » Sun Apr 12, 2020 3:45 pm

Thanks Wes, be interesting which one I have when I get in there. ( TM 9- 8012 To 36A5-2-41 0.016 inch)

horse · Post by **horse** » Tue Apr 14, 2020 9:58 am

Hi, wing off side cover off exhaust off, plenty of room as you said.

I have two seized adjusters. I have sprayed with penetrating oil and will leave overnight.

Can you apply heat to the part or could you suggest another way?

All the others now set to 0.016 inch from being approx 0.012inch.

Thanks in advance.

horse · Post by **horse** » Wed Apr 15, 2020 5:21 am

After a night with the penetrating oil the two seized items are now free.

All set at the correct tolerance and running well, shame I cannot go for a drive.

baios · Post by **baios** » Wed Apr 15, 2020 12:31 pm

Any video for valve adjustment.?

horse · Post by **horse** » Wed Apr 15, 2020 3:55 pm

Hi.

All boxed back up now, but plenty on g503.com YouTube.